Stove door construction



Oct. 27, 1936.

A. H.TINI\JER|\A1ANl sTovE DooR CONSTRUCTION original Filed Jan. 9, 19:55

'11111/IlIIIIll/lllllllIII/11111/1IIIIIIIIIIIIIIIIIIIIII Patented Oct. 27, `1936 .UNITED STATES PATENT OFFICE STOVE DOOR CONSTRUCTION Albert n. Tinnermsn, cleveland, omo Original application January 9, 1935, Serial No.

1,009. Divided and this application 4, 1935, Serial lNo. 48.174

3 Claims.

This invention relates to stove construction, and particularly to cooking ranges, which use either gas or electricity, as a scurc'e of fuel, and the application comprises a division of my copending application, Serial No. 1009, filed January 9, 1935. The modern demand for ranges, which have enameled surfaces has necessitated the use of intertting enameled panels but experience has shown that such panels are easily cracked,`whenever two enameled parts are bolted together. The cracking may not be apparent at the time the range is assembled, but it quickly becomes noticeable, particularly after the range is used, for the expansion and contraction against metal under alternate conditions of heating and cooking causes relative Amovement in the parts. This is particularly apparent adjacent those panels, which must be securely held in position, as for example, those which are used on the front of a compartment closure4 that is mounted upon a vertical hinge. Objection to the cracking and chipping of enamel is not concerned alone with the cost of replacing the defective parts, but also with the fact that the colors cannot readily be matched after a range has once been in use.

An object of my invention therefore, is to so construct a range that the interfltting enameled parts will be held in proper relationship, and yet will not be subjected to mechanical pressure that prevents them from moving with relation to each other under the ordinary conditions of expansion and contraction during use.

' My invention is particularly applicable to a range that has a door mounted upon a vertical hinge, where it is obvious that the door must be i held with sufficient secureness to make it hang properly and where the end panel merges with those on the front to provide a smooth contour.

Referring to the drawing, Fig. 1 is a front elevation of a range illustrating my invention; Fig. 2 is a section taken on an enlarged scale in Fig. 1: Fig. 3 is a perspective fragmentary view of the end panel.

I have illustrated my invention in connection with a range'that has an oven' door IU, a broiler door I I, and a utensil compartment door'I2. 'Ihe y utensil compartment door is mounted upon a vertical hinge I3, one leaf I4 of which is rigidly fastened on an angle bar I5 that is attached to n the stove frame, and the other leaf I6, of which is rigidly fastened to the door. In Fig. 2 I have shown the details of construction by means of which the door is hinged to the frame, and in such illustration, the end panel 20 is shown as having 5 a flange 2l disposed between the hinge leaf I4 and November the leg 22 of the angle bar I5. The leaf may normally be held in place against the angle bar by bolts 23 and nuts 24.

It the flange of the enameled panel should be clamped between the hinge leaf and the angle bar, it is obvious that considerablemechanical pressure would be placed thereon, because of the rigidity with which the leaf must be fastened in order to spport the weight of the door. I propose to hold the end panel firmly in place without subjecting it to mechanical pressure, while still obtaining the desired degree of pressure between the leafI and angle bar, through the medium of the bolts 23. This I accomplish by utilizing spacing sleeves 25, which surround the bolts. and are disposed between the leaf I4 and the leg 22. The sleeves are longer than the thickness ofthe flange 2l and the outer diameter of the sleeves is larger than the diameter of the openings in the leaf and leg respectively through which the bolts extend. Thus, the bolts may be tightened to any desireddegree without imparting any pressure upon thev ange. Moreover, to facilitate the assembly, I` replace the usual bolt openings in the ange by slots 21, which extend horizontally, and which open at the inner edge 28, of the flange. In this way, the end panel may be assembled by hooking the flange into place at the front of the range, and then swinging the rearward end toward the frame, and fastening it in place with bolts 23. This construction facilitates, not only the assembly of the range, but also the shipping and use of it without endangering the enameled edge 30, as it is apparent that the flange is not subjected to any clamping pressure, regardless of the extent to which the bolts 23 are tightened.

To support the door I2, I make the leaf I6 L-shaped, in which one leg 3I is disposed substantially parallel to the leaf I4 when the door is closed and in which the other leg 32 extends substantially at right angles to the leg 3|. The door which is illustrated has a back plate 35 and a front plate 36, the front one being enameled and having a flange 31., on all of its marginal edges, the flange being positioned around a corresponding fiange 38 on the back plate. The back plate is securely attached to the hinge leaf by bolts Il, and the bolts are so positioned that there is no objectionable clamping pressure exerted between the flange 31 and the adjacent surfaces of the leg 3| and ange 38 respectively. Thus the bolts III may be sufdciently tightened to make the door hang properly.

To hold the front and `back panels of the door in correct relationship to each other, I prefer to weld or otherwise securely fasten one or more brackets to the front panel and then to detachably fasten such brackets t0 the rear panel. One form of such bracket comprises a channel-shaped member 45, the flanges 46 of which may be welded to the rear face of the front panel and the intermediate portion l1 of which may be disposed in engagement with the inner surface of the back plate. Bolts 48 may then be used for attaching the back plate to the brackets, and to this end the arms of the bracket may hold a spring fastener 10, for receiving the threaded ends of the bolts. The fastener may be channel-shaped .i in form, so as to be complementary to the shape hinge having one side thereof disposed substantially parallel to and outside the flange of the front plate and extending along the back plate and means for fastening. one leaf of the hinge to the back plate so as to hold it in spaced relationship to the flange of the front plate and means for attaching the other leaf of the hinge to the frame.

2. In a range, the combination of a frame, a closure, the closure having a back plate and a front plate, the front plate having an enameled surface and also having an inwardly extending flange, a hinge, means for attaching one part of the hinge to the frame and means for attaching the other part of the hinge to said back plate, said last named means extending along the outer side of the flange and operating to hold the closure without placing any clamping strain upon the enameled surface of the front plate.

3. In a range, the combination of a frame, a closure, the closure having a back plate and a front plate, a leaf hinge having one leaf thereof L-shaped, means for attaching part of the L- shaped leaf to the back plate, and means for attaching the opposite leaf to the frame, said front plate having an enameled surface and having an inturned flange that is disposed in close proximity to one arm of the L-shaped leaf, the enameled surface of the flange facing the leaf but being out of clamping engagement therewith.

ALBERT H. TINNERMAN'. 

